Recent content by bert2002

I'm pretty rusty with this material it's been a while. A potential field is a scalar field and a force field is a vector field, so in finding the force do I take the gradient of the potential and split r into its 3 dimensional components ?

Homework Statement [/B] I have been given an equation for the magnetic potential of a buried magnetic object which is as follows Pm=α/x2 Where α is some constant and x is the distance from the magnetic body. I need to derive an expression for the magnetic field strength at some distance x...

Homework Statement A time series is sampled at 250 Hz. What is the sampling interval and Nyquist frequency of the original signal, before digitising was contaminated with noise at about 300 Hz. At what frequency would this noise appear in the spectrum of the digitised sequence ? Repeat the...

I know that seismic scattering occurs as a result of the wavefield interaction with a heterogeneity that is of a similar scale length to the incident wavelength, but i do not know how each of these particular entities has an effect, if at all ?

How do the following affect seismic scattering ? 1) topography 2) faulting 3) fluid and melt Any scientific sources are appreciated, thanks

Thanks for clearing that up, what is the purpose of the "." ? I cleared up the other error you pointed out too.

Homework Statement Hello, i have a MATLAB code that simply lists a bunch of parameters with values and an equation that relates all of them together. I am getting on error that says Error in ==> randelltest at 17 Ys0=Yl*{(Pm-Pc)*Yc/Yl*(1-Av*Tm/2*Yc/Yl)-Av*Tm*Pm/2}*(1-1/B); Is there a problem...

thanks, anyone have any idea how i give my signal this length ?

Homework Statement Use Matlab to construct a signal of length 2^13 = 8192 that contains only three frequencies: x=0.5*sin(2*pi*200*t)+0.2*sin(2*pi*455*t)-0.3*sin(2*pi*672*t) Compute and plot the absolute value of the DFT. What does the question mean by signal length and why is it expressed...

Since in particle physics c can be take to equal 1, does this mean that Energy can equal mass if we use electronvolts ?

I'm looking for a website or somewhere online where i can practice difficult problems relating to algebraic transposition, preferably with worked solutions. Can you help ? Thanks

Well the ray path is a vector quantity but the velocity profile equation will produce a scalar field for each point on the x/z plane. as you say, i am looking to use colour to represent the magnitude of the scalar field in a 2-D plane, how can i do this ? Thanks

Homework Statement I have written a program that desribes seismic wave propagation in a medium that has been given a specific velocity profile equation. The velocity at a specific x and z co-ordinate of the ray path is defined by this particular equation, and of course the velocity will vary...

Thanks for the responses. I'm thinking about getting this textbook http: //www.amazon.com/Mathematical-Methods-Physics-Engineering-Comprehensive/dp/0521679710/ref=tag_stp_s2_edpp_url - Mathematical Methods for Physics and Engineering (3rd edition): A Comprehensive Guide - Hobson, Riley...

Hello all. I'm looking for a good textbook about how the mathematics, particularly calculus is applied in physics. I've done some calculus as i am a physics undergraduate student but i want to better learn the math and see how it is applied in physics as i find that a lot more interesting...